NOTE: Garbage collection executes opportunistically in the background, and
so it's possible for reads to return a cell even if it matches the active
GC expression for its family.
NOTE: Garbage collection executes opportunistically in the background, and
so it's possible for reads to return a cell even if it matches the active
GC expression for its family.
NOTE: Garbage collection executes opportunistically in the background, and
so it's possible for reads to return a cell even if it matches the active
GC expression for its family.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Cloud Bigtable Admin V2 API - Class Google::Cloud::Bigtable::Admin::V2::ColumnFamily (v1.13.0)\n\nVersion latestkeyboard_arrow_down\n\n- [1.13.0 (latest)](/ruby/docs/reference/google-cloud-bigtable-admin-v2/latest/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.12.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.12.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.11.1](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.11.1/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.10.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.10.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.9.1](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.9.1/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.8.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.8.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.7.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.7.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.6.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.6.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.5.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.5.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.4.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.4.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.3.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.3.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.2.1](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.2.1/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.1.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.1.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [1.0.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/1.0.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.27.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.27.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.26.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.26.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.25.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.25.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.24.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.24.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.23.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.23.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.22.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.22.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.21.3](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.21.3/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.20.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.20.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.19.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.19.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.18.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.18.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.17.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.17.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.16.3](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.16.3/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.15.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.15.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.14.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.14.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.13.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.13.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.12.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.12.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.11.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.11.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.10.0](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.10.0/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.9.1](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.9.1/Google-Cloud-Bigtable-Admin-V2-ColumnFamily)\n- [0.8.1](/ruby/docs/reference/google-cloud-bigtable-admin-v2/0.8.1/Google-Cloud-Bigtable-Admin-V2-ColumnFamily) \nReference documentation and code samples for the Cloud Bigtable Admin V2 API class Google::Cloud::Bigtable::Admin::V2::ColumnFamily.\n\nA set of columns within a table which share a common configuration. \n\nInherits\n--------\n\n- Object \n\nExtended By\n-----------\n\n- Google::Protobuf::MessageExts::ClassMethods \n\nIncludes\n--------\n\n- Google::Protobuf::MessageExts\n\nMethods\n-------\n\n### #gc_rule\n\n def gc_rule() -\u003e ::Google::Cloud::Bigtable::Admin::V2::GcRule\n\n**Returns**\n\n- ([::Google::Cloud::Bigtable::Admin::V2::GcRule](./Google-Cloud-Bigtable-Admin-V2-GcRule)) --- Garbage collection rule specified as a protobuf. Must serialize to at most 500 bytes.\n\n\n NOTE: Garbage collection executes opportunistically in the background, and\n so it's possible for reads to return a cell even if it matches the active\n GC expression for its family.\n\n### #gc_rule=\n\n def gc_rule=(value) -\u003e ::Google::Cloud::Bigtable::Admin::V2::GcRule\n\n**Parameter**\n\n- **value** ([::Google::Cloud::Bigtable::Admin::V2::GcRule](./Google-Cloud-Bigtable-Admin-V2-GcRule)) --- Garbage collection rule specified as a protobuf. Must serialize to at most 500 bytes.\n\n\n NOTE: Garbage collection executes opportunistically in the background, and\n so it's possible for reads to return a cell even if it matches the active\nGC expression for its family. \n**Returns**\n\n- ([::Google::Cloud::Bigtable::Admin::V2::GcRule](./Google-Cloud-Bigtable-Admin-V2-GcRule)) --- Garbage collection rule specified as a protobuf. Must serialize to at most 500 bytes.\n\n\n NOTE: Garbage collection executes opportunistically in the background, and\n so it's possible for reads to return a cell even if it matches the active\n GC expression for its family.\n\n### #value_type\n\n def value_type() -\u003e ::Google::Cloud::Bigtable::Admin::V2::Type\n\n**Returns**\n\n- ([::Google::Cloud::Bigtable::Admin::V2::Type](./Google-Cloud-Bigtable-Admin-V2-Type)) ---\n\n The type of data stored in each of this family's cell values, including its\n full encoding. If omitted, the family only serves raw untyped bytes.\n\n For now, only the `Aggregate` type is supported.\n\n `Aggregate` can only be set at family creation and is immutable afterwards.\n\n If `value_type` is `Aggregate`, written data must be compatible with:\n - `value_type.input_type` for `AddInput` mutations\n\n### #value_type=\n\n def value_type=(value) -\u003e ::Google::Cloud::Bigtable::Admin::V2::Type\n\n**Parameter**\n\n- **value** ([::Google::Cloud::Bigtable::Admin::V2::Type](./Google-Cloud-Bigtable-Admin-V2-Type)) ---\n\n The type of data stored in each of this family's cell values, including its\n full encoding. If omitted, the family only serves raw untyped bytes.\n\n For now, only the `Aggregate` type is supported.\n\n `Aggregate` can only be set at family creation and is immutable afterwards.\n\n If `value_type` is `Aggregate`, written data must be compatible with:\n- `value_type.input_type` for `AddInput` mutations \n**Returns**\n\n- ([::Google::Cloud::Bigtable::Admin::V2::Type](./Google-Cloud-Bigtable-Admin-V2-Type)) ---\n\n The type of data stored in each of this family's cell values, including its\n full encoding. If omitted, the family only serves raw untyped bytes.\n\n For now, only the `Aggregate` type is supported.\n\n `Aggregate` can only be set at family creation and is immutable afterwards.\n\n If `value_type` is `Aggregate`, written data must be compatible with:\n - `value_type.input_type` for `AddInput` mutations"]]